Endemic to semi-barren, white-shale layers in the Uinta Basin of northeastern Utah. There are currently 8 known populations with a total of about 3000 plants. The species' range and population size have declined over the past 50 years, possibly due to the quarrying of building stone and localized heavy grazing. The entire range of this species is underlain by oil-rich shale and conventional oil and gas deposits; its entire habitat is potentially threatened by energy exploration and development.
Oil and gas exploration, drilling, and production
Oil-shale mining and processing
Off-road vehicle use and surface disturbing activities associated with energy development
Building stone removal
Three known populations with a total number of individuals estimated at about 5,000 individuals. (USFWS 1994)
Populations of this species are partially on the Uintah-Ouray Reservation, the naval oil shale reserve administered by the Department of Energy and the rest is either Bureau of Land Management or private land. Finally, a more accurate estimation of population distribution is recommended.
Successful propagation protocols must be developed and more coordination is needed between the various agencies/tribes that manage this species.
Limited success with ex situ propagation. This species should be studied further in the greenhouse.
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